Electrical

Question 1

What types of batteries are approved for installation in the F900EX?

Answer 1

Normally NiCad batteries but optional lead acid batteries are approved

Question 2

What occurs in the electrical system when a GPU is plugged into the aircraft?

Answer 2

Bus tie relay is automatically tied

generator reverse current relays open

Question 3

What are the maximum generator output limits?

Answer 3

Transient: 350A
Up to FL 430: 300A
Above FL 430: 260A

Question 4

How are the batteries cooled and ventilated on the ground and in-flight?

Answer 4

On the ground there is a battery blower fan with a number two battery switch on

In flight: air circulation

Question 5

What conditions will open the generator reverse relay and trip the generator switch?

Answer 5

Over voltage - more than 32V

Differential fault - more than 375A

Question 6

At what temperatures will the Amber and red lights on the battery temperature indicator illuminate?

Answer 6

Amber: more than 120•F
Red: more than 160•F